Adjustable tire-vulcanizing mold



Aug. 12, 1930. F. E. SNYDER 1,772,544

ADJUSTABLE TIRE VULCANIZING' MOLD I Filed March 24, 1928 g Jig/z. ig. :7- :4 1,2

, l ntention; f cnring molds andfparti cnlarlygt i5 fthe'meldtothus C 25 the iformation in @be 7 quickly secured \whereby 4 ,My inventio w draw Pear a AugQijzj; 1930 I v eb i s rmiimr l e to evu ica i' nga r bias mold for Vul'can izing and l'curingflutoniobile tires or t0 be used inthe repair of automobile tires;

5 These molds -are ordinarily; nzicle" with t lateral Wells and .a,

I transversely extending jbody, the .walls 1 and jbQ Y b ngf o low o that theyfm'ay befille'd" with steam, hot wa'ter erother'heatedfiuid The-tire t0 ,be'vulc an- '10 ized is dispose 'betiwer en split shells, jthe shellsl anc l the tire are thenflisposed between the, sidewalls 0 the fmold, andt pressnrefis applied to; bring theshells (and the walls 'of the tire in close contact; with the he walls of u e'the {beet t be ns- -fer rekitothetire. v V

f The general object o f thezpresent invention i 's to'proyidea mold: Which is laterally'ade J nstable to differentWidthSjsoQthat a' single zo-fmqld may he -used f o'r dillerentwidths/Qf tires and in this eonneetionitq {provide a tire shell which is ferme'd bf two"lateral section's adapted tov be disp' osied around the 'tirel and then v1E be disposed f between the mold vWalls, pf the lateral shells permitting i the Imelicl Walls to beg-forced @t Wa -ds each. other to thus hold {the tire securely in posifurther 'objectflis 1 t0 I may be held in theiriadjusted-positions and ;t'0-: provide t clamp permitting the; adjustmentof these Walls.

oflthefollowlng description-Q v n is illustrated in the accomings wherein v F1gnre l is asic'leelevation of a ti'retvul- 4 40 pa nin mold constructed, in a ccprdance i 50, wa11--10 "and a laterally projecting-portion lQ andthe leer-responding v 3 t portions 16 ;wh ere 35' Further objects'will"appearin theboilrse brews-(2 1.

J A em 4 0.11

' jbe eonne'eted to mun. 264,374:

'ing'port-ion-ll is circular 121 s atgl2 circumference of the tire.

e :fl e ete'm y Pr jecti g po i n 1 1, t Q W ;-secti qns being e nnplernentary to each; other, :theconf o tingzedge of 'th I fhavi ng rneetingf faces 13.2 1 These "side walls ringrpe ft f nll r h l ws -$3 1i fif o pc i-rculate lyvithi so: that hot water, i v

nfthese spaces.- "It' WillibeIuliederstobd that each side wall '10is cnr'vedtjo j -01 decrease 1 the 1 distenee be wall's10, aI mounted 513.; and mofunted ain, this! syersely -extending screw & bearing in; Onehanger 'w movement 11 d. 1: having gagernent'with the other will rbehforl c ed ;t0war ,theQs'crewfiS rotated the two rsectionsg will each other; A tPrefera'b vwillbe f0rined1at itsl ;be rforcedr-a'way from ends 3 withmany sided by'aa'lfahk plied to {the :jshaft to :"r'Otate side.v The two sections 7 are slippbrted upon a base :18 this; base-ha vi'n-g'. transversely "ex- ,tending lpqrtions KIQF JWhichfit'injgrooves 20 ff iormedinthe lower: cornersofthe mold,jthez \sizeitd 'permit' bf the b e be ngief' fidw edjnstment 0f;; the; mold section. The b ase nlay he: ojany. suitable Preferabl CQIistruc'tien but iitfisf hesec'ti ontB is 'a duplicete efthe- T m1 is .proyidecl :with the side wall 10; and 5 en ottom section laterally project- 6Q heating nater'ial may fill; lor 1 ose -ofadjlisting' the section e n H elation ;t.01 ach otherAandpto cflKfi provide the hangers} I UfPOH thB' SGCt iQDS -"EA fimi B 'adjacentr the co'n r'onting edge {feces I.

l5'having rotative' ithout' "longitudinal-i L 1 serew threade'dTen- 5. 1 vhanger "14;;Thi1s'it, I

the {other direction, 80

heating "the-same. It will For the purpose of clamping the tire and 1 V the two opposed shells enclosing the tire into the space between the sections A and Band a inst the faces 12 of the two sections I ro ride the valls lo with the upwardly pro ect slots 26 at its en m Extendingdownwardthrou h this-spaceisa crank shaft 27 preferably (mined at its up per endto receive a cranl; and screw-threaded at its lower end to receive a presser foot or plan or to engage thetir'e in-the usual and By slotting the ex tmlnities of this braceflo the brace will per- 7 mlt theinwerd: and outwardmovemcnt of the twosections.

, wellmown manner.

Reorder tofholdl the two sectionsiof the ition, lugsy28'are provided matched to the side wallsend bent over to ineman locked nine-beneath the "floor or. bottom or the sectien as shown in Figure 1. These vided with set 1 screws 29. In ,1! to e amp the two sections in a locked it is onlv'neces'sary to turn the set Iowa's inward atterthemoldhas been adjlmfl; This holdsjthetwo sections'inad m njhilwd position and prevents an possibleex-t pansiollof the two sections. he brace ectsesumeans forholding the two side malts or two sections of the mold in adjusted rposition by the use of nut 24* on the screws 5 ae-whichmaybe turned down seas t engage Ahimo'mmbarflfi. V

. fllhefliell which isnsed with this. mold is splittype, that istheshell is formed anim te-edicts (see Fig. 3), designated a and w l6 respectively. Both of these sections 1 are alike. Each section has its side face fiat "us int 86 thejnside face of each section, however. Liming formed toconform "to the contour of Hhbtire. two sections ofithe shell are placed two sections, the tire disipond within the mold, the mold tightened iwao 5n 1 contact with the flat face 30 of the two 'onsi andthe bottom of themold comes in mime contact with the outer flanges of the The shellgoes around the tire to Mold it in position audit is an important facts in the success of the machine. Of course,

fildltmay be varied- 'a'nd'that each machine 41m have an assortment of shells. The

. qliblds enact course, to be madeindiilerent sizes and the radius with the; size. The mold opens and m 'n-the ssmje'manner' as a vise; and may boost at anypoint within its .limits. This ot to the largest within its range. It

ingscrews 24 and Xrovide a brace 25having s to receive said screws.-- i V a the shelhas lllustratcd This dependsupon extends down to the shells.

wide a correct heat totlre me being repaired, and'dne o theweys ls'lto iii gart oi the curing is done'with aid of r .i withthieir upper and lower flanges parts: without that the side walls-of the mold come in m :idxwill hermderstood that the sizes ofqthe of the mold bottom will is particularly adapted for making a section repair. This apparatus will accommodate maybe pressed closeagainst thetire. 1

While I have illustrated Ia. construction I whichxI have found to be particularly advanma extend down into thetire ormerely to the method of exerting pressure on the side o ithe If the shells are hand, a m d bag is Tused for the inside pressure'instead of the usual air or stegn tba which must bensed when theshell 1s 115 i any. sizet re and theproperly heated form used,the screw If,on the other i the screw will go into the tire and rest on e sand bag. This sandbzw or the hirer steam begs ere necessary to ho'ld: the tire in shape duringthe process of curing the i of the prime which Ighave devise is not only to mik purposes of l the ma de t itas topic i adj ustttblebut it is to] so construct H of "the the eiimmate' the shellsues muchf'a's possible.

, to cure en injnry to'the sidewallor the head of the tire; Theuse of the shell. accomplishes this function without leaving marks upon the tiresucHas would be by the ordinary bead ironcommonly used. Other shells known to me do not cover all of thetiraas in the present case, and

. cad irons whichtend to leave marks on the as thiemight be formed withtwo reverse threads instead oi merely with a thread at one end.; Obviously, one construction is'the I 'cqmalontofthe other. i Many mmor 'changeemas detuilsof construction an arrangement of theinvention as defined in the appended claims.

"Icl'aimwF I 1. A vulcanizing mold formed in twosectime, each sectionhaving a side wall and a bottom wall, concavely curved upon itsi de face, the side wall of each section exten ing.

beyond the bottom Welland bearing against the inner face of the bottom wall of the other section, the'bottom walls thusprojectlng in opposite directions and means wherebythe may be shifted toward irom L two sections each other.

2. A vulcanizing. mold formed I I ;tions, each section having a side wall and, meld will handle any size of tire fromlthebottom wall, concavely curred upon; itsinsi' 1 face, the side wall of eachsectione beside in the x departing from the spirit of I o and a bottom I tion projecting beyond the .bottom wall of the said section whereby the bottom" wall of I onesection may overlapand extend beneath a 1' a I new;

beyond the bottomiwall and beai'ing against the inner face o'f the bottom wall ofthe other section, k

opposite directions andfmeans whereby the two sections may be tlons and screw-threaded engagement with the other section." 1 i 3. A vulcanizing :mold for tiresformed in,

each section having aside Wall two sections, H

wall,-the side wall ofea ch'sem portion of the side v said side walls and bottom walls being'hollow, means for adjus carry their side walls tow'ard orifrom each other and holdthem in this adjusted position, and means'for heating fluid within the .hol-

7 low sections.

4. 'A vulcanizingmoldfor'tires foriiied'in each section havinga side wall and bottom wall, the side wall ofeach'section two sections,

projecting beyond the bottom wall of the said '7 section whereby the bottom wall of onetsection may overlap and extend beneatha'portion of the side wall ofthe other side walls andbottom means for adjusting'the two sections to carry their side walls toward or from each; other and hold them in this adjustedposition; a brace engaging across the tops of the-side walls, said brace having a solid middle portion and longitudinally slotted end portions, screws extending up through the side walls,

and through said slots,clampingnuts onthe screws, and a clamping screw extending, middle of the brace? downward through the 5. A vulcanizing moldcomp'risingtwo sec tions, each having a side wall and a bottom;

the side wall of each sectionhaving alength of the bottom wall of the corresponding section whereby the bot-- V of one section may overlap and ex twice as long as that tom wall tend beneath a portion of thehsi deYwall of 18 b ing sl d b f the other section, thesectio ing 7 pressure upon the;

tion parallel tothe side walls; I

In testimony whereofherelinto ANK SNYDER! signature.

shifted toward or from each other, said means including a screw having'rotatlve engagement with oneof said sec--i wallof the other section,

ting the two sectionsfito section; said walls being hollow,

other, means for: i 

